A small plane that went down outside of Gilroy this month, killing two people, struck power lines before it crashed, federal officials said Monday. Despite the crash into rugged terrain, the aircraft remained mostly intact, investigators with the National Transportation Safety Board said in a preliminary report. “The separated propeller assembly revealed that one of its blades had multiple S-type bending and a small portion of that blade's tip was missing,” investigators wrote, indicating the plane had struck power lines. Investigators determined the plane struck wires that were 300 feet above a 1,500-foot-wide canyon.